18899698 has 16 divisors (see below), whose sum is σ = 29808000. Its totient is φ = 8970016.

The previous prime is 18899693. The next prime is 18899701. The reversal of 18899698 is 89699881.

It is not an unprimeable number, because it can be changed into a prime (18899693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4803 + ... + 7801.

It is an arithmetic number, because the mean of its divisors is an integer number (1863000).

Almost surely, 2^18899698 is an apocalyptic number.

18899698 is a deficient number, since it is larger than the sum of its proper divisors (10908302).

18899698 is a wasteful number, since it uses less digits than its factorization.

18899698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161.

The product of its digits is 2239488, while the sum is 58.

The square root of 18899698 is about 4347.3782904183. The cubic root of 18899698 is about 266.3697817480.

The spelling of 18899698 in words is "eighteen million, eight hundred ninety-nine thousand, six hundred ninety-eight".